Trends in indices of daily temperature and precipitations extremes in Morocco

Filahi, Said; Tanarhte, Meryem; Mouhir, Latifa; Morhit, Mohammed El; Tramblay, Yves

doi:10.1007/s00704-015-1472-4

Cited by 87 publications

(51 citation statements)

References 33 publications

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“…The Expert Team on Climate Change Detection and Indices (ETCCDI) has defined a set of 27 climate indices (Klein Tank and Lenderink, 2009;Zhang et al, 2011) that have been widely used for analysing changes in extremes (e.g. Frich et al, 2002;Kiktev et al, 2003;Alexander et al, 2006;Diaconescu et al, 2015Diaconescu et al, , 2016Filahi et al, 2016). In this study, we used the definitions proposed by Zhang et al (2011).…”

Section: Computation Of Climate Indices and Evaluation Of Methodologymentioning

confidence: 99%

“…Extremely wet days (mm) PRCPTOT Total wet-day precipitation (mm) indices were computed on an annual basis for 20 Moroccan stations: seven temperature-based indices and six precipitation-based indices (see Table 3). The trends from 1970 to 2010 of these climate indices computed with observations were previously analysed by Filahi et al (2016). Here these indices are compared with those simulated by the four RCMs presented in Table 2.…”

Section: Computation Of Climate Indices and Evaluation Of Methodologymentioning

confidence: 99%

“…Morocco has rarely been the main focus of climate numerical simulation studies (Driouech et al, 2009(Driouech et al, , 2010 and the studies that have been done in this region concluded that significant changes in temperature and precipitation extremes have already occurred in the last few decades (Knippertz et al, 2003;Tramblay et al, 2013;Filahi et al, 2016). Future projections on temperature and precipitation have been provided in several studies for different domains, encompassing Morocco (Hertig and Jacobeit, 2008;Patricola and Cook, 2010;Schilling et al, 2012;Sillmann et al, 2013a;Terink et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Projected changes in temperature and precipitation indices in Morocco from high‐resolution regional climate models

Filahi

Tramblay

Mouhir

et al. 2017

Intl Journal of Climatology

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The climate of Morocco is characterized by a strong spatial and inter-annual variability. This study provides an evaluation of high-resolution regional climate model (RCM) simulations of precipitation and temperature over Morocco and future projections based on two emission scenarios. The evaluation of the RCM ensemble over the historical period is performed with a network of 20 weather stations, using Taylor and Portrait diagrams. The results show that the four simulations considered (CLM, CNRM, KNMI and IPSL) are generally able to simulate climate indices and no model is performing significantly better. This ensemble of RCM simulations captures the precipitation and temperature spatiotemporal patterns in the evaluation and historical runs. Climate change scenarios are presented with the goal to identify spatial patterns of change over Morocco, to provide information for climate policy and adaptation. The RCP4.5 and RCP8.5 emission scenarios are considered for two time horizons, 2036-2065 and 2066-2095. A large increase in temperature is observed by the end of the century in particular for the RCP8.5 scenario over the Southeast regions. The minimum temperature is expected to increase more than maximum temperature in most parts of Morocco, with the exception of the Eastern regions. The different RCMs show a strong agreement towards similar changes for most temperature-based indices. The climate change signal is less homogeneous in the different simulations for most of the precipitation indices. Nevertheless, there is a clear decrease of precipitation totals in the different simulations, following a north to south gradient. However, for heavy rainfall events, there are strong uncertainties in projections and the four RCM simulations disagree about the future changes.

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Section: Computation Of Climate Indices and Evaluation Of Methodologymentioning

confidence: 99%

Section: Computation Of Climate Indices and Evaluation Of Methodologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Projected changes in temperature and precipitation indices in Morocco from high‐resolution regional climate models

Filahi

Tramblay

Mouhir

et al. 2017

Intl Journal of Climatology

View full text Add to dashboard Cite

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“…Previous studies have reported most influential teleconnection patterns and their connections to surface air temperature (SAT) variability on regional, national, and global scales (e.g., [18][19][20][21]). A number of studies have particularly focused on links between changes in extreme temperatures and teleconnection patterns in different parts of the world (e.g., [22][23][24]). …”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal Variability and Trends in Extreme Temperature Events in Finland over the Recent Decades: Influence of Northern Hemisphere Teleconnection Patterns

Irannezhad

Moradkhani

Kløve

2018

Advances in Meteorology

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Fifteen temperature indices recommended by the ETCCDI (Expert Team on Climate Change Detection and Indices) were applied to evaluate spatiotemporal variability and trends in annual intensity, frequency, and duration of extreme temperature statistics in Finland during 1961-2011. Statistically significant relationships between these high-resolution (10 km) temperature indices and seven influential Northern Hemisphere teleconnection patterns (NHTPs) for the interannual climate variability were also identified. During the study period , warming trends in extreme temperatures were generally manifested by statistically significant increases in cold temperature extremes rather than in the warm temperature extremes. As expected, warm days and nights became more frequent, while fewer cold days and nights occurred. e frequency of frost and icing days also decreased. Finland experienced more (less) frequent warm (cold) temperature extremes over the past few decades. Interestingly, significant lengthening in cold spells was observed over the upper part of northern Finland, while no clear changes are found in warm spells. Interannual variations in the temperature indices were significantly associated with a number of NHTPs. In general, warm temperature extremes show significant correlations with the East Atlantic and the Scandinavia patterns and cold temperature extremes with the Arctic Oscillation and the North Atlantic Oscillation patterns.

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“…A major challenge facing Morocco is the impact of climate change and the increased frequency of drought. Climate observations during the last four decades have shown that Morocco is experiencing major impacts from climate change through increased temperatures and decreased precipitations [4].…”

Section: Introductionmentioning

confidence: 99%

Developing a Remotely Sensed Drought Monitoring Indicator for Morocco

et al. 2018

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Drought is one of the most serious climatic and natural disasters inflicting serious impacts on the socio-economy of Morocco, which is characterized both by low-average annual rainfall and high irregularity in the spatial distribution and timing of precipitation across the country. This work aims to develop a comprehensive and integrated method for drought monitoring based on remote sensing techniques. The main input parameters are derived monthly from satellite data at the national scale and are then combined to generate a composite drought index presenting different severity classes of drought. The input parameters are: Standardized Precipitation Index calculated from satellite-based precipitation data since 1981 (CHIRPS), anomalies in the day-night difference of Land Surface Temperature as a proxy for soil moisture, Normalized Difference Vegetation Index anomalies from Moderate Resolution Imaging Spectroradiometer (MODIS) data and Evapotranspiration anomalies from surface energy balance modeling. All of these satellite-based indices are being used to monitor vegetation condition, rainfall and land surface temperature. The weighted combination of these input parameters into one composite indicator takes into account the importance of the rainfall-based parameter (SPI). The composite drought index maps were generated during the growing seasons going back to 2003. These maps have been compared to both the historical, in situ precipitation data across Morocco and with the historical yield data across different provinces with information being available since 2000. The maps are disseminated monthly to several main stakeholders' groups including the Ministry of Agriculture and Department of Water in Morocco.

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Trends in indices of daily temperature and precipitations extremes in Morocco

Cited by 87 publications

References 33 publications

Projected changes in temperature and precipitation indices in Morocco from high‐resolution regional climate models

Projected changes in temperature and precipitation indices in Morocco from high‐resolution regional climate models

Spatiotemporal Variability and Trends in Extreme Temperature Events in Finland over the Recent Decades: Influence of Northern Hemisphere Teleconnection Patterns

Developing a Remotely Sensed Drought Monitoring Indicator for Morocco

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